Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 13, NWS Tulsa, OK

March 9, 20027 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Mar 9, 2002, 12:34 AM CST for 7 counties in Oklahoma. It was in force for 56 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Mar 9, 2002, 12:34 AM CST (06:34 UTC)
Expired: Mar 9, 2002, 1:30 AM CST
In force: 56 min
Issued by: NWS Tulsa, OK
Area: Counties, with a storm outline in the text

Counties Cherokee County, OK, Craig County, OK, Delaware County, OK, Mayes County, OK, Muskogee County, OK, Ottawa County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 50 km from the middle of the area, began a volume at 06:36 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Mar 9, 12:50 AM CST	Thunderstorm Wind 61 E	Eucha, OK	Thunderstorm winds estimated at 70 miles an hour blew a few trees down.
Mar 9, 1:15 AM CST	Thunderstorm Wind 61 E	Tahlequah, OK	Thunderstorm winds estimated at 70 miles an hour blew a tree down.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 6.6 hours before the alert went out and 128 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 217 J/kg
Mixed-layer CIN: -139 J/kg
Mixed-layer LCL: 955 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 282 m²/s²
0-3 km storm-relative helicity: 414 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KTSA 090634 CCA
SVRTUL
OKC021-035-041-097-101-115-145-090730-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED FOR LINE SPEED
NATIONAL WEATHER SERVICE TULSA OK
1229 AM CST SAT MAR 9 2002

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR
  CHEROKEE COUNTY IN EAST CENTRAL OKLAHOMA
  NORTHERN MUSKOGEE COUNTY IN EAST CENTRAL OKLAHOMA
  SOUTHEASTERN CRAIG COUNTY IN NORTHEAST OKLAHOMA
  DELAWARE COUNTY IN NORTHEAST OKLAHOMA
  MAYES COUNTY IN NORTHEAST OKLAHOMA
  OTTAWA COUNTY IN NORTHEAST OKLAHOMA
  EASTERN WAGONER COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 130 AM CST

* AT 1229 AM CST SEVERE THUNDERSTORMS CAPABLE OF PRODUCING WINDS   
UP TO 65 MPH WERE LOCATED ALONG A LINE EXTENDING FROM 3 MILES   
NORTHWEST OF COMMERCE TO 7 MILES WEST OF BOYNTON...MOVING EAST AT   
45 MPH.

THESE STORMS WILL AFFECT A LARGE PORTION OF THE WARNED AREA WITH 
WIDESPREAD DAMAGING WINDS. PERSONS IN THESE AREAS SHOULD TAKE COVER 
FROM THESE STORMS.

LAT...LON 3698 9500 3626 9533 3558 9580 3566 9482
          3700 9462

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 9, 12:30 AM CST	Severe Thunderstorm Warning	TSA	Cherokee, Craig, Delaware, Mayes, Muskogee, Ottawa and 1 more	60 min
Mar 9, 1:00 AM CST	Severe Thunderstorm Warning	TSA	Adair	60 min
Mar 9, 1:24 AM CST	Severe Thunderstorm Warning	TSA	Haskell, Latimer, McIntosh, Muskogee, Pittsburg, Sequoyah	66 min
Mar 9, 1:50 AM CST	Severe Thunderstorm Warning	TSA	Choctaw, Pushmataha	70 min
Mar 9, 1:51 AM CST	Severe Thunderstorm Warning	TSA	LeFlore	69 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2002 Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.